“…Furthermore, in accordance with the theory RAS-reducers have been found to be more pain tolerant than augmenters (Kohn, 1991;Schwerdtfeger, Getzmann, & Baltissen, 2004;Vando, 1974), to consume psychoactive substances like alcohol, tobacco or marijuana more frequently, to sleep fewer hours per night, and to turn a radio on louder than RAS-augmenters (Barnes, 1985;Davis, Cowles, & Kohn, 1984;Kohn, Barnes, & Hoffman, 1979;Kohn & Coulas, 1985;Kohn, Hunt, Cowles, & Davis, 1986;Vulcano, Barnes, & Langstaff, 1990).…”